1 files changed, 44 insertions, 0 deletions
diff --git a/pkg/config/logging.go b/pkg/config/logging.go
new file mode 100644
index 0000000..9ccd35e
--- /dev/null
+++ b/pkg/config/logging.go
@@ -0,0 +1,44 @@
+package config
+
+import (
+	"github.com/icinga/icingadb/pkg/logging"
+	"github.com/pkg/errors"
+	"go.uber.org/zap/zapcore"
+	"os"
+	"time"
+)
+
+// Logging defines Logger configuration.
+type Logging struct {
+	// zapcore.Level at 0 is for info level.
+	Level  zapcore.Level `yaml:"level" default:"0"`
+	Output string        `yaml:"output"`
+	// Interval for periodic logging.
+	Interval time.Duration `yaml:"interval" default:"20s"`
+
+	logging.Options `yaml:"options"`
+}
+
+// Validate checks constraints in the supplied Logging configuration and returns an error if they are violated.
+// Also configures the log output if it is not configured:
+// systemd-journald is used when Icinga DB is running under systemd, otherwise stderr.
+func (l *Logging) Validate() error {
+	if l.Interval <= 0 {
+		return errors.New("periodic logging interval must be positive")
+	}
+
+	if l.Output == "" {
+		if _, ok := os.LookupEnv("NOTIFY_SOCKET"); ok {
+			// When started by systemd, NOTIFY_SOCKET is set by systemd for Type=notify supervised services,
+			// which is the default setting for the Icinga DB service.
+			// This assumes that Icinga DB is running under systemd, so set output to systemd-journald.
+			l.Output = logging.JOURNAL
+		} else {
+			// Otherwise set it to console, i.e. write log messages to stderr.
+			l.Output = logging.CONSOLE
+		}
+	}
+
+	// To be on the safe side, always call AssertOutput.
+	return logging.AssertOutput(l.Output)
+}